The current 3G technologies provide many other services like video telecast, video conferencing, broadcasting TV programs, movies etc. This is achieved by feedback adaptation, whereby the media being sent is adapted in real time according to feedback information about the observed network state and application state. For the success of such adaptive schemes, the feedback must: 1) arrive in a timely manner and 2) carry enough information to effect useful adaptation. In this paper, we exploit the use of feedback adaptation for media streaming in 3G wireless networks, where the media servers are located in wired networks while the clients are wireless. The argument is that end-to-end feedback adaptation using only information provided by 3G standards is neither timely nor contain enough information for media adaptation at the server. The introduction of a streaming agent (SA) at the junction of the wired and wireless network provides useful information in a timely manner for media adaptation. Henceforth optimization algorithms can be designed to take advantage of SA feedbacks to improve performance. The improvement of SA feedbacks in peak signal-to-noise ratio is significant over non agent-based systems. © Research India Publications.